Institutional source issuer.
Institutional source issuer.
J. M. Dziedzic coauthored an optical trapping experiment in which a single laser beam held dielectric particles in water. The observed size range extended from approximately nm to micrometres, illustrating the range of objects accessible to optical tweezers.[ref]
Observation of a single-beam gradient force optical trap for dielectric particles by Arthur Ashkin and others. Optics Letters 11 (1986), pp. 288–290: printed author J. M. Dziedzic and abstract reporting single-beam trapping and particle-size range.
J. Aasi coauthored the LIGO instrument paper describing its advanced detectors. Their -km Michelson interferometer arms use optical cavities to increase interaction with gravitational waves; improved isolation, suspended mirrors and optical design reduce competing sources of noise.[ref]
Advanced LIGO by J. Aasi and others. Abstract and detector configuration; the collaboration standard reference identifies the published instrument paper as J. Aasi et al. (2015).
B. P. Abbott coauthored the collaborative analyses of GW150914. Fitting general relativity waveforms to LIGO data constrained the properties of the merging binary black hole.[ref]
Properties of the Binary Black Hole Merger GW150914 by B. P. Abbott and others. Author list and abstract: coherent analysis across the detector network using compact-binary waveform models and inferred source parameters.
A companion study converted detector control-loop signals into gravitational wave strain, with an optomechanical response model and independent checks of its measurement uncertainty.[ref]Calibration of the Advanced LIGO detectors for the discovery of the binary black-hole merger GW150914 by B. P. Abbott and others. Author list and abstract: time-domain calibration filters, optomechanical/feedback response and validation with radiation-pressure actuation.
Masahiro Kito contributed to establishing p-type semiconductor behavior in magnesium-doped gallium nitride. Hiroshi Amano's account credits Kito with Hall effect measurements after low-energy electron beam treatment, providing stronger evidence for the conduction type than the initial hot-probe test.[ref]
Growth of GaN on Sapphire via Low-Temperature Deposited Buffer Layer and Realization of p-Type GaN by Mg Doping Followed by Low Energy Electron Beam Irradiation by Hiroshi Amano. §V, pp. 1135–1136: sample growth with Kito and his Hall-effect measurement; acknowledgments, p. 1137, print Masahiro Kito in full.
Shin-ichi Nagahama coauthored work on blue laser diodes based on indium gallium nitride. The devices delivered W of optical power at A electric current, with wall-plug efficiency, for potential full-color displays.[ref]
High-Power Pure Blue InGaN Laser Diodes by Atsuo Michiue and others. pp. 194–197, author list and Summary: blue GaN-based laser diodes; output, operating current and wall-plug efficiency.
Tomoya Yanamoto coauthored work on blue laser diodes based on indium gallium nitride. The devices delivered W of optical power at A electric current, with wall-plug efficiency, for potential full-color displays.[ref]
High-Power Pure Blue InGaN Laser Diodes by Atsuo Michiue and others. pp. 194–197, author list and Summary: blue GaN-based laser diodes; output, operating current and wall-plug efficiency.
Tokuya Kozaki coauthored work on blue laser diodes based on indium gallium nitride. The devices delivered W of optical power at A electric current, with wall-plug efficiency, for potential full-color displays.[ref]
High-Power Pure Blue InGaN Laser Diodes by Atsuo Michiue and others. pp. 194–197, author list and Summary: blue GaN-based laser diodes; output, operating current and wall-plug efficiency.
Takashi Miyoshi coauthored work on blue laser diodes based on indium gallium nitride. The devices delivered W of optical power at A electric current, with wall-plug efficiency, for potential full-color displays.[ref]
High-Power Pure Blue InGaN Laser Diodes by Atsuo Michiue and others. pp. 194–197, author list and Summary: blue GaN-based laser diodes; output, operating current and wall-plug efficiency.
Atsuo Michiue coauthored work on blue laser diodes based on indium gallium nitride. The devices delivered W of optical power at A electric current, with wall-plug efficiency, for potential full-color displays.[ref]
High-Power Pure Blue InGaN Laser Diodes by Atsuo Michiue and others. pp. 194–197, author list and Summary: blue GaN-based laser diodes; output, operating current and wall-plug efficiency.
A theoretical physicist whose work relates flavor symmetry to patterns of neutrino oscillations. His 2008 analysis asked which finite groups can enforce a particular mixing pattern independently of arbitrary interaction strengths. This turns a proposed pattern of quantum mixing into a constraint on a model’s symmetry, rather than adjusting each matrix entry separately.[ref]
Determining Horizontal Symmetry from Neutrino Mixing by C. S. Lam. Abstract: group-theoretic restrictions on tribimaximal mixing; identity cross-check with McGill homepage and author email
A theoretical physicist who studied the foundations of quantum mechanics. In a 2000 proposal, he examined whether requiring an appropriate classical limit constrains the statistical interpretation of discrete quantum variables such as spin. The argument deliberately stopped short of a complete derivation: it did not establish the probability interpretation for continuous position variables. This makes the assumptions and limits of an interpretive proposal explicit.[ref]
Inferring the statistical interpretation of quantum mechanics from the classical limit by Kurt Gottfried. Abstract: combined continuous/discrete system, classical-motion requirement and stated limitation
Portrait of Kurt Gottfried
. Source. Institutional source issuer.
Institutional source issuer.
Institutional source issuer.
An experimental contributor to the Sudbury Neutrino Observatory’s study of solar neutrinos. A neutral current reaction measured the total active-neutrino flux, while a separate reaction preferentially measured electron neutrinos. Comparing the two showed that some neutrinos reached Earth in a different flavor, supplying direct evidence for solar-neutrino flavor transformation.[ref]
Direct Evidence for Neutrino Flavor Transformation from Neutral-Current Interactions in the Sudbury Neutrino Observatory by Q. R. Ahmad and others. Opening summary and reaction comparison: neutral-current total flux and electron-neutrino component
An experimental contributor to the Super-Kamiokande measurement of atmospheric neutrinos. The team found that the observed muon-neutrino population depended on arrival direction, hence on distance traveled through or around Earth. This path-length dependence supplied evidence for neutrino oscillations, connecting an underground particle detector with changes in neutrino flavor during propagation.[ref]
Evidence for oscillation of atmospheric neutrinos by Y. Fukuda and others. Opening summary and zenith-angle distributions: path length and muon-neutrino deficit
Y. Toyoda coauthored a method for growing gallium nitride on sapphire by metalorganic vapour-phase epitaxy, introducing an aluminium nitride layer before the main film. The films had flat, crack-free surfaces, with X-ray diffraction and photoluminescence used to assess their quality.[ref]
Metalorganic vapor phase epitaxial growth of a high quality GaN film using an AlN buffer layer by Hiroshi Amano and others. Applied Physics Letters 48 (1986), pp. 353–355: author list and abstract, atmospheric-pressure growth with AlN layers and optical/diffraction characterization; primary article copy.
Nobuhiko Sawaki coauthored a method for growing gallium nitride on sapphire by metalorganic vapour-phase epitaxy, introducing an aluminium nitride layer before the main film. The films had flat, crack-free surfaces, with X-ray diffraction and photoluminescence used to assess their quality.[ref]
Metalorganic vapor phase epitaxial growth of a high quality GaN film using an AlN buffer layer by Hiroshi Amano and others. Applied Physics Letters 48 (1986), pp. 353–355: author list and abstract, atmospheric-pressure growth with AlN layers and optical/diffraction characterization; primary article copy.
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